Simple WASM Runtime

WebAssembly runtime POC with wasmer with HashMap-based KV store. First make sure to install wat2wasm and rust.

# following command installs rust
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

cargo run --release <wasm binary>

WASM binary requirements

Entry point is eval(code_ptr: i32, code_len: i32) -> i32, following are exported functions, on error return -1:

• kv_put(key_ptr: i32, key_len: i32, val_ptr: i32, val_len: i32) -> i32
• kv_get(key_ptr: i32, key_len: i32, val_ptr: i32, val_len: i32) -> i32
• print(msg_ptr: i32, msg_len: i32) -> i32